Laser induced vibration-based pillar porcelain insulator detecting device and detecting method thereof

Abstract

The invention discloses a laser induced vibration-based pillar porcelain insulator detecting device and a detecting method thereof, and relates to the field of pillar porcelain insulator detection. The detecting device comprises a pulsed laser, a lens system, an ultrasonic receiving system and a computer; the lens system comprises a beam splitter, an attenuating sheet, a first lens and a second lens; laser generated by the pulsed laser is irradiated on the lens system; the ultrasonic receiving system comprises a first photoelectric detector, an adaptive laser interferometer, a second photodetector, a data acquisition card and a signal processor; and the signal processor is electrically connected with the computer. The laser generated by the pulsed laser goes through the lens system, and irradiates and excites the surface of a pillar porcelain insulator to emit an ultrasonic signal, and the ultrasonic signal goes through the ultrasonic receiving system and is transmitted to the computerin order to perform the damage detection of the pillar porcelain insulator, so the detection efficiency of the pillar porcelain insulator is effectively improved, and the labor pressure of staff is alleviated.

Description

technical field [0001] The invention belongs to the field of detection of pillar porcelain insulators, in particular to a detection device and method for pillar porcelain insulators based on laser-induced vibration. Background technique [0002] As an important part of the power system, high-voltage electrical equipment is directly related to the safety and stability of the power grid, and the circuit breaker in the power grid is an important part of high-voltage electrical equipment. Once a failure occurs, it will inevitably pose a threat to the reliable operation of the power grid; According to statistical data, 60%-70% of circuit breaker failures are caused by damage to supporting pillar porcelain insulators. The operation practice of power transmission and transformation equipment in recent years has shown that the effective way to prevent post insulator damage is to inspect or detect post insulators; this method can detect its external and internal defects in advance, s...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a laser-induced vibration-based detection device and detection method for pillar porcelain insulators. After the laser beam generated by the pulse laser is irradiated on the surface of the pillar porcelain insulator through the lens system and an ultrasonic signal is excited, and the ultrasonic signal The signal is sent to the computer through the ultrasonic receiving system to detect the damage of the pillar porcelain insulator, which solves the problem that the existing ultrasonic detection method cannot detect the pillar porcelain insulator when it is charged and the detection efficiency is low

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